A galleon was a large, multi-decked sailing ship used primarily by the nations of Europe from the 16th to 18th centuries. Whether used for war or commerce, they were generally armed with demi-culverin. Galleons were an evolution of the caravel and carrack (or nao), for the new great ocean going voyages. A lowering of the forecastle and elongation of the hull gave an unprecedented level of stability in the water, and reduced wind resistance at the front, leading to a faster, more maneuverable vessel. The galleon differed from the older types primarily by being longer, lower and narrower, with a square tuck stern instead of a round tuck, and by having a snout or head projecting forward from the bows below the level of the forecastle. In Portugal at least, carracks were usually very large ships for their time (often over 1000 tons), while galleons were mostly under 500 tons, although the Manila galleons were to reach up to 2000 tons. Carracks tended to be light